Yes definitely
I have 32bit as well but its def not as convenient when out and about so the ixy @96/24 does a good enough job. Once I got my head round it (SL), baked into kontakt etc…its more than good enough although Im yet to hear feedback from audiophile peeps.
I would have assumed the issue does not change though? Once the mic noise was gone, then you could notice the very low level ambient noise, me breathing etc…Ill have to hold my breath next time in confined spaces lol
ie 32bit is floating point relative to the lowest level? The headroom is standard at around -18 so even 40 db down is absolutely more than good enough considering a library (ie listening environ) is approx 40?